Disposable lunch box



FIG. 1 is a perspective view of a disposable lunch box showing my design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines shown on FIGS. 1 and 3 represent fold lines. 

The ornamental design for disposable lunch box, as shown and described. 